CN107105830B - Slider for slide fastener - Google Patents

Abstract

A slider (6, 7) for a slide fastener is composed of a slider body (10) having an upper wing plate (40, 40a), pull tabs (20, 20a), and cover members (30, 50), wherein the pull tabs (20, 20a) have a grip portion (21), a 1-link portion (22) extending from the grip portion (21), and a pair of attachment shaft portions (23) protruding from the ends of the link portion (22) to the left and right sides. The cover member (30, 50) has a 1 st cover portion (31a, 51a) covering the shoulder-mouth side end of the upper wing plate (40, 40a) and a pair of 2 nd cover portions (31b, 51b) extending from the 1 st cover portion (31a, 51a) in the direction of the back mouth. Therefore, even if the pull tab (20, 20a) is applied with a force in a twisting direction, the connecting part (22) of the pull tab (20, 20a) is not easy to deform or break. The sliders (6, 7) have good touch and appearance, and the sliders (6, 7) are less likely to catch other articles.

Description

Slider for slide fastener

Technical Field

The present invention relates to a slider for a slide fastener comprising 3 components of a slider body, a pull tab, and a cover member.

Background

The slide fastener generally has: a pair of left and right fastener stringers in which element rows are formed along a tape longitudinal direction on opposing tape side edge portions of left and right fastener tapes, and a slider slidably attached to the element rows, wherein the fastener can be closed or opened by sliding the slider along the element rows in a coupling direction or a separating direction of the fastener elements.

As a slider used for this slide fastener, for example, a slider composed of 3 members of a slider body, a pull tab, and a cover member is disclosed in japanese patent No. 4906644 (patent document 1) and international publication No. 2013/001597 pamphlet (patent document 2). In particular, patent document 1 describes a slider having a stopping mechanism that locks the slider so as to be immovable with respect to the element rows of the fastener stringer and maintains a stopped state of the slider.

For example, as shown in fig. 13, the slider 8 of patent document 1 is formed of 3 parts, namely, a slider body 60, a pull-tab 70 attached to the slider body 60 so as to be rotatable, and a cover member 75 which is engaged with the slider body 60 and holds the pull-tab 70 between itself and the slider body 60.

The slider body 60 includes an upper blade 61 and a lower blade 62 arranged substantially parallel to each other, shoulder-opening-side ends (front end portions) of the upper and lower blades 61 and 62 are connected by a guide post 63, and a Y-shaped element guide passage is formed between the upper and lower blades 61 and 62 to communicate a shoulder opening provided on both left and right sides of the guide post 63 and a rear opening provided on a rear end. Further, flange portions 64 are provided in a perpendicular manner at left and right side edge portions of the upper blade 61.

An accommodating portion 61a for accommodating a later-described stop pawl 74 of the pull tab 70 is formed in the upper blade 61 of the slider body 60, and left and right windows (pawl holes) penetrating the element guide passage are formed through the bottom of the accommodating portion 61 a. A locking post 61b is disposed in front of and behind the housing portion 61a, and the locking post 61b has an engaged portion to which the cover member 75 is locked. Left and right support wall portions 61c having bearing portions 61d are provided to connect the front and rear snap-in posts 61 b.

The tab 70 includes a grip portion 71, a pair of left and right connecting arm portions 72 extending in the longitudinal direction of the tab 70 from the grip portion 71, and an attachment shaft portion 73 arranged along the width direction between the front end portions of the left and right connecting arm portions 72, and a stopper 74 is integrally formed at the width direction center portion of the attachment shaft portion 73.

In this case, the left and right coupling arms 72 are disposed outside the bearing portions 61d provided on the left and right support walls 61c of the slider body 60. The stop pawl 74 has a pawl base 74a bulging from the attachment shaft portion 73 in a direction orthogonal to the coupling arm portion 72, and left and right 1 st pawl portions 74b and 2 nd pawl portions 74c protruding from the pawl base 74 a.

The cover member 75 includes an elastically deformable cover portion 75a and engaging portions 75b provided to protrude from the inner surfaces of the front and rear end portions of the cover portion 75 a.

When the slider 8 is assembled using the 3 components of the slider body 60, the pull tab 70, and the cover member 75, the stop pawl 74 is inserted into the accommodating portion 61a of the slider body 60, and the attachment shaft portion 73 of the pull tab 70 is inserted into the bearing portion 61d of the slider body 60, thereby placing the pull tab 70 on the slider body 60.

Next, the cover member 75 is attached to the slider body 60 by covering the slider body 60 with the cover member 75 and engaging the front and rear engaging portions 75b of the cover member 75 with the front and rear engaged portions provided on the engaging posts 61b of the slider body 60. At this time, the front and rear engaging portions 75b are engaged with the front and rear engaged portions by elastic deformation of a portion of the cover portion 75 a. Thus, the slider 8 in which the attachment shaft portion 73 of the pull tab 70 is rotatably held between the slider body 60 and the cover member 75 is manufactured.

In the slider 8 of patent document 1, since the pull tab 70 has the above-described stop pawl 74, the pawl portion of the stop pawl 74 can be fitted between the fastener elements of the element row by utilizing the self-weight turning of the pull tab 70 and the forced movement of the slider 8 in the element separating direction, and the slider 8 can be locked so as not to slide.

Therefore, in general sliders having a stopper mechanism as in the prior art of patent document 1, the stopper mechanism is often formed by attaching a metal elastic member such as a leaf spring, but in the slider 8 of patent document 1, the stopper mechanism can be formed without using a metal elastic member.

This reduces the number of parts of the slider 8 having the stop mechanism, thereby reducing the cost and facilitating the assembly of the slider 8 with mechanical stability. In addition, in patent document 1, since the wear of the stop pawl 74 can be suppressed when the slider 8 is locked, the stop mechanism can be caused to function stably for a long period of time.

As shown in fig. 14, the slider 9 described in patent document 2 is formed of 3 parts, namely, a slider body 80, a pull tab 90 pivotably attached to the slider body 80, and a cover member 95 which is engaged with the slider body 80 and holds the pull tab 90 between itself and the slider body 80.

In the slider body 80 of patent document 2, a pair of left and right bearing portions 82 stand on an upper blade 81, a pawl hole 83 is formed between the left and right bearing portions 82, and a stop pawl 93a, which will be described later, of a pull tab 90 is inserted into and pulled out of the pawl hole 83. A pair of right and left fixing posts 84 for fixing the cover member 95 are provided upright on the front end of the upper blade 81, and a groove 84a to be engaged is formed in the lower end of each fixing post 84.

The pull tab 90 includes a grip portion 91, a pair of left and right connecting arm portions 92 extending from the grip portion 91, and an attachment shaft portion 93 arranged along the width direction between the front end portions of the left and right connecting arm portions 92, and an opening window portion 94 surrounded by the grip portion 91, the left and right connecting arm portions 92, and the attachment shaft portion 93 is formed in the pull tab 90.

The mounting shaft portion 93 has a stop claw 93a projecting in a direction substantially perpendicular to the left and right connecting arm portions 92. A pair of left and right locking pieces 91a extending toward the attachment shaft portion 93 are disposed on the inner edge portion of the grip portion 91. In this case, the left and right coupling arms 92 are disposed outside the left and right bearing portions 82 provided in the slider body 80.

The cover member 95 has: a wide part 96 disposed at the tip part; a narrow part 97 extending rearward from the wide part 96, the slider having a smaller dimension in the slider width direction than the wide part 96; and a cantilever-shaped projecting piece 98 extending further rearward from the narrow width portion 97, for locking the pair of left and right locking pieces 91a of the tab 90. In patent document 2, the pair of left and right locking pieces 91a of the pull tab 90 are locked to the protruding piece 98 of the cover member 95, whereby the pull tab 90 can be kept in a collapsed state.

The wide portion 96 of the cover member 95 has a shape (planar shape) substantially identical to the shape (planar shape) of the distal end portion of the upper blade 81 in a plan view of the slider 9. The wide portion 96 includes a top plate portion, left and right side wall portions and front and rear wall portions that are provided to hang from the back surface (lower surface) of the top plate portion, and a housing space portion for housing the left and right fixing posts 84 provided on the slider body 80 is formed by the top plate portion, the left and right side wall portions, and the front and rear wall portions. The narrow portion 97 extends from the wide portion 96 in a flat plate shape, and is disposed so as to cover the attachment shaft portion 93 of the tab 90 from above.

When the slider 9 is assembled from the 3 parts of the slider body 80, the pull tab 90, and the cover member 95, the stop pawl 93a is first inserted into the pawl hole 83 of the slider body 80, and the attachment shaft portion 93 of the pull tab 90 is inserted into the bearing portion 82 of the slider body 80, thereby placing the pull tab 90 on the slider body 80. Next, the cover member 95 is covered from above the slider body 80, the left and right fixing posts 84 of the slider body 80 are accommodated in the accommodation space provided in the wide portion 96 of the cover member 95, and then the lower end portions of the left and right side wall portions of the cover member 95 are pressed inward and deformed.

Thereby, the protruding portion of the cover member 95, which is plastically deformed so as to protrude inward, is pressed into the engaged groove portion 84a formed in the fixed post 84, and the cover member 95 is fixed to the slider body 80. In this way, the slider 9 in which the attachment shaft portion 93 of the pull tab 90 is rotatably held between the slider body 80 and the narrow width portion 97 of the cover member 95 is manufactured.

Since the slider 9 of patent document 2 includes the stop mechanism based on the stop pawl 93a and is formed of 3 parts as in the slider 9 of patent document 1, cost reduction can be achieved by reducing the number of parts, and the slider 9 can be easily assembled. In the slider 9 of patent document 2, the upper surfaces of the wide portion 96, the narrow portion 97, and the locking piece portion 91a of the cover member 95 are formed in a relatively wide flat shape, so that the appearance quality and the appearance of the slider 9 can be improved, and the feel of the slider 9 can be improved.

Documents of the prior art

Patent document

Patent document 1: japanese patent No. 4906644 Specification

Patent document 2: international publication No. 2013/001597 pamphlet

Disclosure of Invention

In general, when a slide fastener is attached to a product such as clothing or a bag, a slider is often exposed to the outside of the product, and therefore, the touch and appearance (design) are sometimes emphasized.

However, in the slider 8 described in patent document 1 shown in fig. 13, for example, the upper surface of the upper wing plate 61 of the slider body 60 is exposed to the outside, and the front surface or the back surface of the tab 70 is formed with a layer difference from the upper surface of the upper wing plate 61 in a state where the tab 70 is laid down, for example. The cover member 75 fixed to the slider body 60 also forms a step with respect to the upper blade 61 and the pull tab 70.

Since the shape of the upper surface side of the slider 8 has a plurality of steps, the slider 8 feels uneven when touched by a hand, and the touch is not good. Further, there is a case where the appearance of the slider 8 does not match the design of the slide fastener mounted product. Further, when the slider 8 is used for clothing, bags, or the like, there is a risk that another article may be caught by the step of the slider 8.

On the other hand, the slider 9 disclosed in patent document 2 shown in fig. 14 has a relatively flat appearance because the cover member 95 is formed wider than the slider 8 of patent document 1. Therefore, the slider 9 of patent document 2 appears to have a fashionable feeling, and the touch of the slider 9 is also relatively good.

However, in the slider 9 of patent document 2, even when the pull tab 90 is in a state of being laid down, a level difference is formed between the upper surface of the cover member 95 and the upper surface of the pull tab 90, and between the upper surface of the pull tab 90 and the upper surface of the upper wing plate 81 exposed to the outside through the opening window portion 94 of the pull tab 90. Therefore, in order to further improve the touch of the slider 9 and further reduce hooking of other articles, it is desirable to make the upper surface of the slider 9 as a whole more flat.

In the sliders 8 and 9 described in patent documents 1 and 2, the pinching portions 71 and 91 and the attachment shaft portions 73 and 93 of the tabs 70 and 90 are coupled by a pair of right and left coupling arm portions 72 and 92. The pull tabs 70, 90 are attached to the slider bodies 60, 80 in a state where the attachment shaft portions 73, 93 thereof are supported by the left and right bearing portions 61d, 82 provided in the slider bodies 60, 80. In this case, the left and right coupling arm portions 72 and 92 of the pull tabs 70 and 90 are disposed on the outer sides in the slider width direction than the left and right bearing portions 61d and 82 provided on the slider bodies 60 and 80.

In the case where the left and right coupling arm portions 72 and 92 of the pull tab 70 and 90 are disposed at positions separated from each other to some extent at positions outside the left and right bearing portions 61d and 82 of the slider body 60 and 80 and the coupling arm portions 72 and 92 are formed to be slender, for example, when the pull tab 70 or 90 receives an excessive force in a direction of twisting with respect to the mounting shaft portion 73 or 93 held by the slider body 60 or 80 during a sliding operation of the slider 8 or 9, one or both of the left and right coupling arm portions 72 and 92 may be deformed or bent.

The present invention has been made in view of the above-described conventional problems, and a specific object thereof is to provide a slider for a slide fastener, which is formed of 3 pieces, i.e., a slider body, a pull tab, and a cover member, and which can improve strength of the pull tab against a force in a twisting direction, reduce a step formed on an upper surface side of the slider, improve a touch feeling, improve an appearance, and prevent other articles from being caught.

In order to achieve the above object, the present invention provides a slider for a slide fastener, which comprises, as a basic configuration, a slider body in which an upper blade and a lower blade are coupled to each other by a guide post, a pull tab rotatably disposed with respect to the slider body, and a cover member attached to the slider body, wherein the slider for a slide fastener is characterized in that: the tab includes a grip portion, 1 coupling portion extending in a tab longitudinal direction from the grip portion, and a pair of mounting shaft portions protruding from ends of the coupling portion on the opposite side to the grip portion to both left and right sides in a tab width direction, the cover member includes a 1 st cover portion and a pair of 2 nd cover portions, the 1 st cover portion covers shoulder-mouth-side ends of the upper wing plate when viewed from an upper surface direction of the slider body, the pair of 2 nd cover portions extends in a back-mouth direction from the 1 st cover portion, and a groove portion capable of accommodating the coupling portion of the tab is provided between the pair of 2 nd cover portions of the cover member.

In the slider of the present invention, it is preferable that the cover member has an engaging portion that engages with the upper blade, and at least a part of the cover member is formed to be elastically deformable, and the upper blade has an engaged portion that engages with the engaging portion of the cover member.

In this case, it is preferable that the engaging portion includes at least 1 st engaging portion disposed in the 1 st cover portion and a pair of 2 nd engaging portions disposed in the 2 nd cover portions on the left and right sides, the engaged portion includes at least 1 st engaged portion and a pair of 2 nd engaged portions, the 1 st engaged portion is disposed on the shoulder opening side of the slider body with respect to the mounting shaft portion and engages the 1 st engaging portion of the cover member, and the pair of 2 nd engaged portions is disposed on the rear opening side of the slider body with respect to the mounting shaft portion and engages the 2 nd engaging portions of the cover member, respectively, in a state where the cover member and the pull tab are assembled to the slider body.

Further, it is preferable that the upper blade includes: 1 st reinforcing wall portions provided upright on the left and right of the 1 st engaged portion in the upper wing plate, respectively, and formed integrally with the 1 st engaged portion; and 2 nd reinforcing wall portions that are provided upright on outer sides of the pair of 2 nd engaged portions in the upper wing plate, respectively, and that are formed integrally with the 2 nd engaged portions.

Preferably, the 1 st reinforcing wall portion and the 2 nd reinforcing wall portion of the upper paddle are disposed separately from each other, and the cover member has an insertion wall portion inserted between the 1 st reinforcing wall portion and the 2 nd reinforcing wall portion of the upper paddle. In this case, it is particularly preferable that left and right reinforcing ribs protruding from the upper blade are disposed on left and right side edge portions of the upper blade, and the fitting wall portion is disposed between the reinforcing ribs and the mounting shaft portion.

In the slider of the present invention, it is preferable that the width of the coupling portion is set to be larger than the maximum width of 1 of the 2 nd cover portion.

Preferably, the tab has a proximal end portion connected to the connecting portion and formed to be wider than the connecting portion, and the proximal end portion of the tab is adjacent to a rear opening-side end portion of the cover member when the connecting portion is accommodated in the groove of the cover member. In this case, it is particularly preferable that the width between the left and right outer edges of the proximal end portion is set smaller than the width between the left and right outer edges of the rear mouth-side end portion of the cover member.

Further, in the slider according to the present invention, it is preferable that the slider body has a pawl hole portion provided through the upper blade, and the pull tab has a stop pawl provided to protrude from the central coupling portion and protruding into the element guide passage of the slider body through the pawl hole portion.

Effects of the invention

The slider of the present invention is formed of 3 parts of the slider body, the pull tab, and the cover member as described above. The tab has a grip portion disposed at one end of the tab, an attachment shaft portion disposed at the other end of the tab, and 1 connecting portion extending from the grip portion in the tab longitudinal direction and connecting the grip portion and the attachment shaft portion, and the attachment shaft portion protrudes in the tab width direction from the left and right side surfaces of the end portion opposite to the side of the connecting portion connected to the grip portion.

In the slider of the present invention, the tab holding portion and the attachment shaft portion are coupled by 1 coupling portion, and thus the coupling portion of the present invention has a larger cross-sectional area (thicker) than the left and right coupling arm portions of the conventional tab, which are formed in the left and right directions as the coupling portion, and the strength of the coupling portion can be increased.

Further, the coupling portion of the present invention is arranged particularly at the center portion in the tab width direction, and therefore, even if the tab receives a force in a direction of twisting with respect to the attachment shaft portion when the slider is slid along the element row by, for example, pinching the tab, the moment received by the coupling portion can be reduced as compared with the case where the left and right coupling arm portions are arranged at positions outside of each other to some extent as in the conventional cases of patent documents 1 and 2.

That is, the tab of the present invention can increase the strength of the coupling portion that couples the grip portion and the attachment shaft portion, and can reduce the moment when the coupling portion receives a force in the direction of twisting, compared to the conventional tabs as in patent documents 1 and 2, and therefore, the deformation or breakage of the coupling portion can be made less likely to occur.

In the slider according to the present invention, when the slider body is viewed from above, the cover member includes the 1 st cover portion covering the shoulder opening side end portion of the upper blade and the pair of right and left 2 nd cover portions extending in two parts in the back opening direction from the 1 st cover portion, and a groove portion capable of accommodating the coupling portion of the pull tab is provided between the right and left 2 nd cover portions of the cover member.

Thus, when the pull tab is laid down toward the rear opening side of the slider body, the pull tab is fitted into and accommodated in the groove portion of the cover member, so that the step formed between the upper surface of the cover member and the upper surface of the pull tab can be reduced, or the step formed between the upper surface of the cover member and the upper surface of the pull tab can be prevented. In the present invention, the upper flap can be entirely covered with the cover member and the pull tab from above, and therefore, it is possible to prevent a step from being formed between the upper surfaces of the cover member and the pull tab and the upper surface of the upper flap.

Therefore, in the slider of the present invention, since the upper surface of the entire slider can be brought into a nearly flat state with little step (or a flat state without step), the touch feeling when the slider is touched from the upper side becomes good, and when the slide fastener having the slider of the present invention is attached to a fastener-attached product such as clothing, it is possible to make it difficult for the slider to hook other articles or the like. In this case, since the slider is relatively thin and has a flat appearance, the quality of the appearance of the slider can be improved, and for example, a smart impression, a fashionable impression, or the like can be given.

In the slider of the present invention, the cover member has an engagement portion that engages with the upper blade, and at least a part of the cover member is formed to be elastically deformable. The upper wing plate of the slider body has an engaged portion for engaging the engaging portion of the cover member. In such a slider, the cover member can be easily and stably assembled to the slider body by snap-fit engagement.

In particular, in this case, the engaging portion of the cover member has at least 1 st engaging portion disposed on the 1 st cover portion and a pair of 2 nd engaging portions disposed on the 2 nd cover portions on the left and right sides, respectively. The engaged portion of the upper wing plate has at least 1 st engaged portion and a pair of 2 nd engaged portions, and in a state where the cover member and the pull-tab are assembled to the slider body, the 1 st engaged portion is disposed on a shoulder side of the slider body with respect to the attachment shaft portion of the pull-tab and engages the 1 st engaging portion of the cover member, and the pair of 2 nd engaged portions is disposed on a rear side of the slider body with respect to the attachment shaft portion of the pull-tab and engages the 2 nd engaging portions of the cover member, respectively.

Therefore, in a state where the attachment shaft portion of the pull-tab is held between the 1 st engaged portion and the 2 nd engaged portion of the upper wing plate, by engaging the 1 st and 2 nd engaging portions of the cover member with the 1 st and 2 nd engaged portions of the upper wing plate, the cover member can be firmly attached to the slider body, and the attachment shaft portion of the pull-tab can be stably held between the slider body and the cover member. Thus, the slider composed of 3 parts can be reliably assembled, and the slider can be easily and stably assembled. Further, the cover member and the pull-tab are less likely to fall off from the slider body when the slider attached to the slide fastener is slid, and sufficient quality for durability in normal use can be stably secured.

In this case, the upper wing plate includes: a 1 st reinforcing wall portion which is provided upright on the left and right of the 1 st engaged portion in the upper wing plate, respectively, and is formed integrally with the 1 st engaged portion; and 2 nd reinforcing wall portions which are respectively provided upright on outer sides of the pair of 2 nd engaged portions in the upper wing plate and are formed integrally with the 2 nd engaged portions. Thus, the 1 st engaged portion and the 2 nd engaged portion are reinforced by the 1 st reinforcing wall portion and the 2 nd reinforcing wall portion, respectively, and therefore the cover member can be more reliably attached to the slider body.

Further, in this case, the 1 st reinforcing wall portion and the 2 nd reinforcing wall portion of the upper panel are disposed separately from each other, and the cover member has an insertion wall portion inserted between the 1 st reinforcing wall portion and the 2 nd reinforcing wall portion of the upper panel. Thus, when the cover member is assembled to the slider body, the cover member can be stably positioned with respect to the upper blade (particularly, positioned in the front-rear direction). When the slider is assembled, the 1 st reinforcing wall portion and the 2 nd reinforcing wall portion of the upper blade are arranged to be continuous with the fitting wall portion of the cover member. Therefore, the 1 st and 2 nd engaged portions of the upper blade, the bearing portion, and the attachment shaft portion of the pull-tab can be hidden and protected by these wall portions so as not to be visible from the outside, and the outer shape of the slider can be made smarter.

Left and right reinforcing ribs protruding from the upper wing plate are arranged at left and right side edges of the upper wing plate, and the fitting wall portion of the cover member is arranged between the reinforcing ribs and the mounting shaft portion. By disposing the reinforcing rib, the strength of the upper wing plate can be increased. Further, since the fitting wall portion of the cover member is disposed between the reinforcing rib and the attachment shaft portion, the fitting wall portion is disposed inside the reinforcing rib and protected, and the attachment shaft portion of the pull tab can be stably covered with the fitting wall portion and protected.

In the slider of the present invention, the width of the coupling portion of the tab is set to be larger than the maximum width of one of the pair of right and left second cover portions 2. This makes the connecting portion of the tab thicker, and can increase the strength of the connecting portion.

In the present invention, the tab has a base end portion connected to the connecting portion and formed to have a width larger than that of the connecting portion. The proximal end of the handle is adjacent to the rear opening end of the cover member when the coupling portion is fitted into the groove of the cover member. The width between the left and right outer edges of the proximal end portion of the handle portion is set smaller than the width between the left and right outer edges of the rear mouth-side end portion of the cover member.

Thus, in a state where the pull tab is stored in the groove portion of the cover member while being laid down, the left and right side edges of the cover member and the left and right side edges of the tab gripping portion appear to be continuous with each other, and therefore, when the entire slider is viewed from above, the outer shape (contour) in which the cover member and the pull tab are integrated appears. This can further improve the feel and appearance quality of the slider. Further, by making the width of the base end of the grip smaller than the width of the rear opening end of the cover member, it is possible to make it difficult for other articles or the like to be hooked on the tab.

The slider body of the present invention further includes a pawl hole provided through the upper blade, and the pull tab includes a stop pawl protruding from an end portion of the coupling portion on the side of the mounting shaft and protruding into the element guide passage of the slider body through the pawl hole of the upper blade. Thus, the slider can stably have a stop mechanism that maintains a stop state of the slider with respect to the element rows of the fastener stringer.

Further, since the slider is provided with the stop mechanism of the stop pawl by the pull tab, when the stop pawl is fitted between the fastener elements of the fastener stringer and the slider is locked in sliding, the pull tab is locked in rotation with respect to the slider body at the same time. This can effectively prevent the generation of the swing of the pull tab and the contact sound of the pull tab with the slider body due to the swing.

Drawings

Fig. 1 is a plan view showing a slide fastener according to example 1 of the present invention.

Fig. 2 is a plan view showing a slider according to embodiment 1.

Fig. 3 is a front view of the slider.

Figure 4 is a side view of the slider.

Fig. 5 is a cross-sectional view taken along line V-V of fig. 2.

Fig. 6 is a partial sectional view taken along line VI-VI of fig. 2.

Fig. 7 is a perspective view of the slider in an exploded state.

Fig. 8 is a sectional view of the slider in an exploded state.

Fig. 9 is a cross-sectional view showing a state where the pull tab is erected with respect to the upper surface of the upper flap.

Fig. 10 is a perspective view of a slider according to a modification of embodiment 1 in an exploded state.

Fig. 11 is a sectional view of the slider in an exploded state.

Fig. 12 is a perspective view showing a cover member of a slider according to another modification of embodiment 1.

Fig. 13 is an exploded perspective view of a conventional slider.

Fig. 14 is an exploded perspective view of another conventional slider.

Detailed Description

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings by way of examples. The present invention is not limited to the embodiments described below, and various modifications can be made as long as the structure is substantially the same as the present invention and the same operational effects are obtained.

For example, in the following embodiments, a case where the slider of the present invention is formed as a slider for a slide fastener in which a fastener element row is formed by a plurality of fastener elements which are continuously wound in a coil shape is described, but the slider of the present invention may be formed as a slider for a slide fastener in which a plurality of independent fastener elements are attached to a fastener tape by injection molding or a slide fastener in which fastener elements are attached to a fastener tape by pressing and plastically deforming metallic fastener elements.

Example 1

Fig. 1 is a plan view showing a slide fastener of example 1. Fig. 2 to 4 are a plan view, a front view, and a side view of the slider of embodiment 1. Fig. 5 and 6 are sectional views of the V-V line and the VI-VI line shown in fig. 2. Fig. 7 and 8 are exploded views of the slider.

In the following description, the front-back direction refers to a sliding direction of the slider or a tape length direction of the fastener tape, and particularly, a direction in which the slider is slid so that left and right element rows are engaged with each other is defined as a front direction, and a direction in which the slider is slid so that the engaged element rows are separated (separated) from each other is defined as a rear direction.

The left-right direction refers to a width direction of the slider or a tape width direction of the fastener tape. In embodiment 1 of fig. 1, the slider width direction and the tab width direction are the same direction. Further, the vertical direction means a height direction of the slider or a tape back direction of the fastener tape, and particularly, a direction in which the pull tab is attached to the slider body of the slider is referred to as an upper direction, and an opposite direction thereof is referred to as a lower direction.

The slide fastener 1 of the present embodiment 1 has: a pair of right and left fastener stringers 2 in which element rows 4 are formed along the tape longitudinal direction at opposite tape side edge portions (also referred to as element attaching portions) of right and left fastener tapes 3; and a slider 6 slidably attached to the element row 4.

In this case, the element row 4 of the fastener stringer 2 is formed by: a plurality of continuous fastener elements 5 obtained by forming a monofilament into a coil shape are sewn to the fastener tape 3 by a double lock stitch of a sewing thread not shown in the figure in a state where a core thread not shown in the figure is inserted into each fastener element 5.

The slider 6 of example 1 includes a stop mechanism that can maintain a stopped state of the slider 6 by fitting a stop pawl 24, which will be described later, of the pull tab 20 between the fastener elements 5 of the element row 4 and engaging with the element row 4 when the slider 6 is stopped with respect to the element row 4.

The slider 6 is formed of 3 parts of a slider body 10, a pull tab 20 and a cover member 30. The slider body 10, the pull tab 20, and the cover member 30 are formed into a predetermined shape by injection molding a thermoplastic resin such as polyamide, polyacetal, polypropylene, polybutylene terephthalate, or the like.

By forming the entire slider 6 of synthetic resin in this manner, the slider 6 can be reduced in weight. In the present invention, at least 1 of the slider body 10, the pull tab 20, and the cover member 30 may be formed using a metal material such as a zinc alloy instead of the synthetic resin.

The slider body 10 of embodiment 1 is formed in a bilaterally symmetrical shape with respect to the center plane in the slider width direction. The slider body 10 includes an upper blade 40, a lower blade 12 disposed parallel to and apart from the upper blade 40, a guide post 13 connecting front end portions (shoulder opening side end portions) of the upper and lower blades 40, 12, an upper flange portion 14 provided to hang from left and right side edge portions of the upper blade 40 toward the lower blade 12, and a ridge portion 15 disposed on the left and right side edge portions of the lower blade 12.

Further, at the front end portion of the slider body 10, shoulder openings are formed at both left and right sides sandwiching the guide posts 13, and at the rear end of the slider body 10, a rear opening is formed. Further, a Y-shaped element guide passage 16 that communicates the left and right shoulder openings and the rear opening is formed between the upper blade 40 and the lower blade 12. A tape insertion gap for inserting the fastener tape 3 is provided between the upper flange portion 14 and the ridge portion 15 of the slider body 10.

The upper blade 40 of the slider body 10 includes: a front engaged portion (1 st engaged portion) 41 provided upright on the upper surface of the front end portion of the upper blade 40; left and right front reinforcing wall portions (1 st reinforcing wall portion) 43 integrally disposed with the front engaged portion 41 on both left and right sides of the front engaged portion 41; left and right rear engaged portions (2 nd engaged portions) 42 provided upright on the upper surface of the rear end portion of the upper paddle 40; left and right rear reinforcing wall portions (second reinforcing wall portions) 44 disposed integrally with the rear engaged portion 42 on the outer sides in the width direction of the respective rear engaged portions 42; right and left connecting vertical wall portions 45 arranged along the front-rear direction inside the front reinforcing wall portion 43 and the rear reinforcing wall portion 44; a support bulge 46 which is disposed between the left and right rear engaged portions 42 and supports the pull tab 20 which has fallen down to the rear mouth side; left and right reinforcing ribs 47 disposed at left and right side edges of the upper wing plate 40; and a claw hole portion 48 which is provided between the left and right coupling vertical wall portions 45 and into which the stop claw 24 of the pull tab 20 is inserted.

The front engaged portion (1 st engaged portion) 41 and the rear engaged portion (2 nd engaged portion) 42 of the upper blade 40 are provided as engaged portions for engaging the cover member 30. In this case, when the slider 6 of example 1 is formed, the front engaged portion (1 st engaged portion) 41 is disposed forward (shoulder side) of the position of the attachment shaft portion 23 of the pull tab 20, which will be described later, and the rear engaged portion (2 nd engaged portion) 42 is disposed rearward (rear side) of the position of the attachment shaft portion 23 in the front-rear direction. The front engaged portion (1 st engaged portion) 41 is disposed forward (on the shoulder side) of a position where a later-described bearing portion 45d of the mounting shaft portion 23 is supported by the connecting vertical wall portion 45, and the rear engaged portion (2 nd engaged portion) 42 is disposed rearward (on the rear side) of the position of the bearing portion 45 d.

The front engaged portion 41 of the upper blade 40 in embodiment 1 includes a front pillar portion 41a rising from the upper blade 40 and a front hook portion 41b extending forward from an upper end portion of the front pillar portion 41 a.

In this case, a space into which a front claw portion 33b of a front engagement portion 33 of the cover member 30, which will be described later, is fitted is provided between the upper surface of the upper blade 40 and the front hook portion 41 b. Further, on the upper surface of the distal end portion of the upper blade 40, a recessed portion 49 into which the front engaging portion 33 of the cover member 30 is inserted is formed from the front engaged portion 41 to the distal end edge of the upper blade 40.

The left and right front reinforcing wall portions 43 are formed of a thin wall body erected on the upper surface of the upper paddle 40. Each front reinforcing wall portion 43 is integrally connected to both left and right ends of the front engaged portion 41 to reinforce the front engaged portion 41, and is also connected to a front end portion of the connecting vertical wall portion 45. In this case, the portions of the left and right front reinforcing wall portions 43 connected to the front engaged portion 41 are formed to be locally thick. The outer wall surfaces of the left and right front reinforcing wall portions 43 are arranged obliquely with respect to the front-rear direction so that the width dimension between the left and right outer side surfaces gradually increases from the front end portion toward the rear end portion.

The height dimension of the left and right front reinforcing wall portions 43 from the upper surface of the upper blade 40 is set larger than the height dimension of the front engaged portion 41 and the connecting vertical wall portion 45 from the upper surface of the upper blade 40. The upper end edge of the front reinforcing wall portion 43 is formed obliquely to the upper surface of the upper paddle 40 so as to correspond to a curved shape of a cover portion 31 of the cover member 30, which will be described later, and so that the height dimension of the front reinforcing wall portion 43 gradually increases from the front end portion to the rear end portion of the front reinforcing wall portion 43.

The left and right rear engaged portions 42 each include a rear pillar portion 42a rising from the upper panel 40 and a rear hook portion 42b extending rearward from an upper end portion of the rear pillar portion 42 a. In this case, a space into which a rear claw portion 34b of a rear engagement portion 34 of the cover member 30, which will be described later, is fitted is provided between the upper surface of the upper blade 40 and the rear hook portion 42 b.

In this case, each rear engaged portion (2 nd engaged portion) 42 is disposed between the 2 nd reinforcing wall portion 44 and the support bulging portion 46. Thus, in a state where the rear engagement portion (the 2 nd engagement portion) 34 of the cover member 30, which will be described later, is engaged with the rear engaged portion 42, the rear engagement portion 34 is sandwiched between the 2 nd reinforcing wall portion 44 and the support bulging portion 46, and therefore, the position of the rear engagement portion 34 of the cover member 30 can be prevented from shifting in the left-right direction.

The left and right rear reinforcing wall portions 44 are formed of a thin wall body erected in the front-rear direction on the upper surface of the upper paddle 40. The left and right rear reinforcing wall portions 44 are integrally connected to the outer edges of the left and right rear engaged portions 42, reinforce the rear engaged portions 42, and are also connected to the rear end portions of the connecting vertical wall portions 45. The outer wall surface at the rear end of each rear reinforcing wall 44 is formed as a continuous surface that is not stepped from the side surface of the upper blade 40 and the outer side surface of the upper flange 14.

The height dimension of the left and right rear reinforcing wall portions 44 from the upper surface of the upper paddle 40 is set to be larger than the height dimension of the rear engaged portion 42 and the connecting vertical wall portion 45 from the upper surface of the upper paddle 40. The upper end edge of the rear reinforcing wall portion 44 is formed to be inclined with respect to the upper surface of the upper blade 40 so as to correspond to a curved shape of a cover portion 31 of the cover member 30, which will be described later, and so that the height dimension of the rear reinforcing wall portion 44 gradually decreases from the front end portion to the rear end portion of the rear reinforcing wall portion 44.

The left and right connecting longitudinal wall portions 45 are disposed from both left and right sides of the front engaged portion 41 to the left and right rear engaged portions 42 along the front-rear direction so as to connect the front reinforcing wall portion 43 with the rear reinforcing wall portion 44 and the rear engaged portion 42. Each of the left and right connecting vertical wall portions 45 has: a thick front wall portion 45a connected to the front reinforcing wall portion 43; a thick rear wall portion 45b connected to the rear reinforcing wall portion 44 and the rear engaged portion 42; a thin intermediate wall portion 45c disposed between the front wall portion 45a and the rear wall portion 45 b; and a bearing portion 45d formed in a recessed shape at a central portion in the front-rear direction of the intermediate wall portion 45 c.

In this case, the height dimension of the connecting vertical wall portion 45 from the upper surface of the upper paddle 40 is set smaller than the height dimension of the front reinforcing wall portion 43 and the rear reinforcing wall portion 44 from the upper surface of the upper paddle 40. The inner wall surface of the front wall portion 45a, the inner wall surface of the intermediate wall portion 45c, and the inner wall surface of the rear wall portion 45b, which are inner wall surfaces of the connecting vertical wall portions 45, form a single continuous plane, and the interval between the inner wall surfaces of the left and right connecting vertical wall portions 45 is set to be larger than the width dimension (dimension in the left-right direction) of the later-described central connecting portion 22 of the pull tab 20. The central coupling portion 22 may also be referred to as a coupling portion.

Further, a space having a size that allows insertion of the later-described attachment shaft portion 23 of the tab 20 is provided between the front wall portion 45a and the rear wall portion 45b that connect the vertical wall portions 45, by a difference in wall thickness (a difference in dimension in the slider width direction) between the front and rear wall portions 45a, 45b having a large wall thickness and the intermediate wall portion 45c having a small wall thickness. The bearing portion 45d connecting the vertical wall portion 45 is recessed so as to cut out a semicircular shape downward from the upper end of the intermediate wall portion 45c, and the mounting shaft portion 23 of the tab 20 is supported by the arc-shaped inner surface (upper surface) of the bearing portion 45 d.

The support bulging portion 46 is disposed between the left and right rear engaged portions 42 from the rear end of the claw hole portion 48 to the rear opening side end edge of the upper blade 40 so as to bulge out from the upper surface of the upper blade 40 at the rear end portion (rear opening side end portion) of the upper blade 40. The support bulging portion 46 has a base portion 46a integrated with the upper paddle 40 and a support protrusion portion 46b disposed on the upper surface of the distal end portion of the base portion 46 a. Therefore, when the tab 20 is laid down toward the rear opening, the support protrusion 46b of the support bulge 46 comes into contact with the central connection portion 22 of the tab 20, which will be described later, and the tab 20 is supported by the support bulge 46 so as to be substantially parallel to the upper flap 40.

Left and right reinforcing ribs 47 are formed on left and right side edges of the upper panel 40 so as to protrude from the upper panel 40, and are provided to be connected to the left and right front reinforcing wall portions 43. By providing such a reinforcing rib 47, the strength of the slider body 10 (particularly, the upper blade 40) can be increased. When the strength of the slider body 10 is sufficiently ensured by the material or the like, the slider body 10 may be formed without providing the reinforcing rib 47.

The pawl hole portion 48 of the upper blade 40 is formed from the central portion of the upper blade 40 in the slider longitudinal direction to a position supporting the distal end of the bulging portion 46 in a region sandwiched by the left and right connecting longitudinal wall portions 45 in the slider width direction. The pawl hole portion 48 is provided so as to penetrate from the upper surface of the upper blade 40 to the element guide passage 16.

The pull tab 20 in the present embodiment 1 has: a grip 21 disposed at one end (1 st end) of the tab 20 and configured to be grasped by fingers of a user; 1 central connecting part 22 extending from the base end part of the holding part 21 to the length direction of the pull piece; left and right mounting shaft portions 23 disposed at the proximal end portion of the central connection portion 22; and a stop claw 24 projecting from a proximal end portion of the central connection portion 22. The proximal end of the grip 21 is formed to have a width larger than that of the central connection 22. That is, the proximal end portion of the tab 21 is formed to have a larger dimension in the tab width direction than the central connection portion 22.

The tab 20 is formed in a substantially isosceles trapezoid shape when viewed from one surface (upper surface) side, and the tab 21 is disposed to project outward (rearward side) of the slider body 10 in a state where the tab 20 is laid down substantially parallel to the upper blade 40 toward the rear opening side of the slider body 10 and fitted into a groove portion 32, described later, of the cover member 30. Here, the upper surface of the pull tab 20 refers to a surface of the pull tab 20 facing upward in a state where the pull tab 20 is laid down toward the rear opening side of the slider body 10 and fitted into the groove portion 32 of the cover member 30, and the lower surface of the pull tab 20 refers to a surface facing in the opposite direction from the upper surface.

The right and left outer edges of the base end portion of the grip portion 21 are disposed adjacent to the rear end portion of a cover portion 31, which will be described later, of the cover member 30 in a state where the pull tab 20 is folded back toward the rear opening. The width between the right and left outer edges of the proximal end portion of the grip portion 21 is set smaller than the width of the rear end portion of the cover portion 31, preferably 85% or more and less than 100%.

As a result, the left and right side edges of the cover member 30 and the left and right side edges of the grip portion 21 of the folded tab 20 are formed continuously, and it is difficult to catch or pinch other articles between the cover member 30 and the grip portion 21 of the tab 20. Further, the cover member 30 and the pull tab 20 can be formed to have an appearance that they are integrated when the slider 6 is viewed from above. In this case, in order to improve the tactile sensation of the grip portion 21, the ridge line portion disposed between the outer peripheral surface and the upper surface of the outer periphery of the grip portion 21 is formed in a smooth surface shape with corners cut off.

The central connecting portion 22 of the tab 20 is formed of 1 connecting body linearly extending from the widthwise central portion of the pinch portion 21. Further, although the central coupling portion 22 of the present embodiment 1 extends in the tab longitudinal direction from the widthwise central portion of the tab 21, in the present invention, a coupling portion that couples the tab portion of the tab and the attachment shaft portion may extend from a position slightly shifted in the left-right direction from the widthwise central portion of the tab portion.

The central connecting portion 22 has a constant width from a distal end portion connected to the grip portion 21 to a proximal end portion where the mounting shaft portion 23 is disposed. In particular, the width of the central coupling portion 22 is set smaller than the width of the proximal end portion of the grip portion 21, and the upper surface of the grip portion 21 is formed as a continuous flat surface without forming a step with respect to the upper surface of the central coupling portion 22. Therefore, the grip portion 21 and the central connection portion 22 are T-shaped in plan view.

The width dimension of the central coupling portion 22 is set smaller than the interval between the inner wall surfaces of the left and right coupling vertical wall portions 45 of the upper blade 40 so that the central coupling portion 22 is disposed between the left and right bearing portions 45d provided on the upper blade 40. The width of the central coupling portion 22 is set to be larger than the maximum width of one of the right and left 2 nd cover portions 31b of the cover member 30 (in embodiment 1, the width of the coupling-side end portion of the right or left 2 nd cover portion 31b coupled to the 1 st cover portion 31 a).

As described above, since the central coupling portion 22 of example 1 is formed thick, the area of the cross section (cross-sectional area) of the central coupling portion 22 perpendicular to the tab longitudinal direction can be secured larger than the cross-sectional area of each of the coupling arm portions extending in the left and right directions from the pinch portion like a conventional tab, and thus the strength of the central coupling portion 22 can be improved.

The attachment shaft portion 23 of the tab 20 protrudes in a cylindrical shape on both left and right sides in the width direction (direction orthogonal to the tab length direction) from the left and right side surfaces of the base end portion of the central linking portion 22. The diameter of the cylindrical mounting shaft portion 23 is set to a size that can be inserted into a bearing portion 45d provided in the connecting vertical wall portion 45 of the upper blade 40. In this case, the width dimension of each of the left and right mounting shaft portions 23 (i.e., the dimension between the side surface of the central connecting portion 22 and the circular side surface of the mounting shaft portion 23) is set to be larger than the thickness (width dimension) of the thin intermediate wall portion 45c of the connecting longitudinal wall portion 45 of the upper blade 40.

The stop claw 24 of the tab 20 extends from the base end portion of the central linking portion 22 in a direction substantially orthogonal to the longitudinal direction and the width direction of the tab 20. The stopper claw 24 includes: a claw body base 24a formed integrally to bulge on the lower surface of the central coupling portion 22; a pair of left and right extension pieces 24b extending from left and right side edges of the claw body base 24 a; left and right 1 st and 2 nd claw portions 24c and 24d further protruding from the front ends of the left and right extension piece portions 24 b. The left and right extension pieces 24b are arranged in parallel with each other at a predetermined interval.

The 1 st claw portion 24c of the stop claw 24 is provided to protrude from the left extension piece portion 24b as shown by a broken line in fig. 8. The 2 nd claw portion 24d is provided projecting from the right extension piece portion 24 b. The 1 st claw portion 24c and the 2 nd claw portion 24d are arranged with the positions in the tab longitudinal direction shifted from each other in the front-rear direction.

In this case, the position of the 1 st hook portion 24c and the position of the 2 nd hook portion 24d are shifted according to the size of 1 fastener element 5 in the element row 4, and in example 1, the 1 st hook portion 24c on the left side is disposed forward of the 2 nd hook portion 24d on the right side in a state where the tab 20 is folded down toward the rear and the central coupling portion 22 is accommodated in the groove portion 32 of the cover member 30.

Further, in the stop pawl 24 of embodiment 1, the pair of the 1 st pawl portion 24c and the 2 nd pawl portion 24d on the left and right sides is arranged, but in the present invention, the stop pawl 24 may be formed so as to have only one of the 1 st pawl portion 24c on the left side and the 2 nd pawl portion 24d on the right side.

The cover member 30 of embodiment 1 has: a cover portion 31 serving as a top plate; 1 front engaging portion (1 st engaging portion) 33 disposed at the front end portion of the cover portion 31; a pair of right and left rear engaging portions (2 nd engaging portion) 34 disposed at the rear end portion of the cover portion 31; a pair of right and left fitting wall portions 35 disposed at right and left side edge portions of the cover portion 31 and fitted between the front and rear reinforcing wall portions 43, 44 of the upper panel 40; a pair of left and right shaft pressing portions 36 for pressing the attachment shaft portion 23 of the tab 20 from above; and a connecting lateral wall portion 37 connecting the front end portions of the left and right shaft pressing portions 36.

The cover portion 31 of the cover member 30 is formed in a gently curved thin plate shape such that the central portion in the slider longitudinal direction bulges upward when the slider 6 is viewed from the left and right side surfaces, and is slightly elastically deformable when the cover member 30 is assembled to the slider body 10. In order to improve the tactile sensation, the ridge line portion disposed between the outer peripheral surface and the upper surface of the outer periphery of the cover portion 31 is formed in a smooth surface shape with corners cut off.

The cover portion 31 has, when the slider body 10 is viewed from above: a first cover portion 31a covering a shoulder opening side end portion (front end portion) of the upper blade 40, and right and left second cover portions 31b extending rearward from the first cover portion 31a in two parts. A groove portion 32 is formed between the left and right 2 nd cover portions 31b, and when the pull tab 20 is folded back toward the rear opening, the groove portion 32 fits into and receives the central coupling portion 22 of the pull tab 20, and when the pull tab 20 is rotated, the central coupling portion 22 can be pulled out from the groove portion 32. In this case, the top surface of the 1 st cover part 31a and the top surfaces of the right and left 2 nd cover parts 31b are formed as smooth one curved plane.

The 1 st cover portion 31a is formed in substantially the same shape as the shape of the region of the upper blade 40 on the front side of the bearing portion 45d in plan view so that the 1 st cover portion 31a covers the entire front end portion of the upper blade 40 when the cover member 30 is covered on the upper blade 40 of the slider body 10.

The left and right 2 nd cover portions 31b are formed in such a shape that, when the cover member 30 is placed over the upper blade 40, the left and right outer side edges of each 2 nd cover portion 31b disposed on the outer sides in the width direction overlap with the left and right side edges of the rear region from the bearing portion 45d of the upper blade 40 in a plan view.

The groove portion 32 formed between the left and right 2 nd cover portions 31b is formed so as to be able to fit and receive the central coupling portion 22 of the tab 20 when the tab 20 is folded down toward the rear opening side, and the gap in the slider width direction of the groove portion 32 is set to a dimension substantially equal to or slightly larger than the width dimension of the central coupling portion 22 of the tab 20.

The front engaging portion 33 and the right and left rear engaging portions 34 of the cover member 30 are provided as engaging portions with respect to the slider body 10. The front engaging portion 33 includes a front pillar portion 33a that is vertically provided downward from the front end portion of the 1 st cover portion 31a, and a front claw portion 33b that extends rearward from the lower end portion of the front pillar portion 33 a. As shown in fig. 3, the front post 33a of the front engaging portion 33 has a shape in which the width dimension decreases downward, and the lower end portion of the front post 33a is inserted into a recessed groove portion 49 provided at the distal end portion of the upper blade 40 when the cover member 30 is assembled to the slider body 10.

Left and right rear engaging portions 34 are provided at the rear end portions of left and right 2 nd cover portions 31b, respectively. Each rear engaging portion 34 includes a rear pillar portion 34a that depends downward from the 2 nd cover portion 31b and a rear claw portion 34b that extends forward from a lower end of the rear pillar portion 34 a. In this case, the rear pillar portion 34a of the rear engaging portion 34 has the same width dimension as the rear pillar portion 42a of the rear engaged portion 42 rising from the upper panel 40.

The left and right fitting wall portions 35 are disposed in the front-rear direction at positions slightly inward of the left and right side edges of the cover portion 31 in the center portion of the cover portion 31 in the longitudinal direction. By disposing the fitting wall portion 35 in this manner, even if the fitting wall portion 35 is suspended from the cover portion 31 in the front-rear direction, the above-described elastic deformation of the cover portion 31 can be generated.

The left and right fitting walls 35 are formed to fit between the front and rear reinforcing walls 43 and 44 of the upper blade 40 when the cover member 30 is assembled to the slider body 10, and to abut against or come close to the upper surface of the upper blade 40. In this case, in order to make it difficult for the slider 6 to catch other articles, the respective insertion wall portions 35 are preferably formed such that the outer wall surfaces of the insertion wall portions 35 are continuous with the outer wall surfaces of the front and rear reinforcing wall portions 43 and 44. When the cover member 30 is assembled to the slider body 10, the left and right insertion wall portions 35 are disposed between the reinforcing rib 47 of the upper blade 40 and the attachment shaft portion 23 of the pull tab 20.

The left and right shaft pressing portions 36 are disposed along the front-rear direction at positions inward in the width direction of the left and right fitting wall portions 35, and particularly in embodiment 1, the left and right shaft pressing portions 36 are respectively provided so as to hang from inner edges of the left and right 2 nd cover portions 31 b. Each shaft pressing portion 36 has a suspended wall portion extending downward from the 2 nd cover portion 31b and a recessed portion recessed in a semicircular shape from a lower end of the suspended wall portion upward, and can rotatably press the attachment shaft portion 23 of the tab 20 from above through an arc-shaped inner surface of the recessed portion.

The coupling lateral wall portion 37 of the cover member 30 is provided to hang in the left-right width direction at the rear end portion of the 1 st cover portion 31 a. The coupling lateral wall portion 37 increases the strength of the cover member 30, and abuts against the upper surfaces of the left and right coupling longitudinal wall portions 45 of the upper wing plate 40 when the cover member 30 is assembled to the slider body 10, thereby stabilizing the position of the cover portion 31 with respect to the upper wing plate 40.

Next, a procedure for assembling the slider 6 including the slider body 10, the pull tab 20, and the cover member 30 as described above will be described.

First, the left and right attachment shaft portions 23 of the pull tab 20 are inserted into the left and right bearing portions 45d provided on the upper blade 40 of the slider body 10, and the central coupling portion 22 of the pull tab 20 is placed on the support bulging portion 46 of the upper blade 40, whereby the pull tab 20 is provided on the slider body 10 in a state of being laid down toward the rear opening side. At this time, the stop pawl 24 of the pull tab 20 is inserted into the pawl hole portion 48 of the slider body 10.

Next, the slider body 10 provided with the pull tab 20 is covered with the cover member 30 from above the slider body 10 and the pull tab 20. At this time, the positions of the front engaging portion 33 and the left and right rear engaging portions 34 of the cover member 30 are matched with the positions of the front engaged portion 41 and the left and right rear engaged portions 42 of the slider body 10, and the position of the shaft pressing portion 36 of the cover member 30 can be matched with the position of the attachment shaft portion 23 of the pull tab 20 by covering the cover member 30 so that the left and right insertion wall portions 35 of the cover member 30 are inserted between the front and rear reinforcing wall portions 43, 44 of the slider body 10.

Next, after the cover member 30 is covered on the slider body 10, the cover member 30 is pressed against the slider body 10. As a result, the cover part 31 of the cover member 30 is elastically deformed, and the front engaging part 33 of the cover member 30 is engaged over the front hook 41b of the front engaged part 41 of the slider body 10, and the rear engaging part 34 of the cover member 30 is engaged over the rear hook 42b of the right and left rear engaged parts 42 of the slider body 10.

Thereby, the cover member 30 is attached to the slider body 10, and the attachment shaft portion 23 of the pull tab 20 is rotatably held between the bearing portion 45d of the upper blade 40 and the shaft pressing portion 36 of the cover member 30. In this case, the central coupling portion 22 of the tab 20 is accommodated in the groove portion 32 of the cover member 30, and the upper surface of the cover portion 31 of the cover member 30, the pinching portion 21 of the tab 20, and the upper surface of the central coupling portion 22 are arranged in a flat shape in which the difference in level formed therebetween is extremely small.

As described above, in embodiment 1, the slider 6 is assembled by the front engaging portion 33 and the rear engaging portion 34 of the cover member 30 being interposed between the bearing portion 45d of the upper blade 40 and the attachment shaft portion 23 of the pull tab 20 and engaging with the front engaged portion 41 and the rear engaged portion 42 of the slider body 10, whereby the slider 6 can be reliably and firmly assembled by the 3 parts of the slider body 10, the pull tab 20, and the cover member 30. Further, the assembly operation of the slider 6 can be easily performed without using a special tool or instrument.

In the assembled slider 6 of example 1, as shown in fig. 5, for example, when the pull tab 20 is laid down toward the rear opening side of the slider body 10 so as to be substantially parallel to the upper surface of the upper blade 40, the 1 st and 2 nd pawl portions 24c and 24d of the stop pawl 24 can be projected to the element guide passage 16 of the slider body 10.

In addition, in a state where the 1 st and 2 nd claw portions 24c and 24d protrude into the element guide passage 16, the 1 st and 2 nd claw portions 24c and 24d can be pulled out from the element guide passage 16 as shown in fig. 9 by rotating the tab 20 in a direction substantially orthogonal to the upper surface of the upper wing plate 40. At this time, the pull tab 20 abuts against the rear end edge of the 1 st cover portion 31a of the cover member 30, thereby restricting the pull tab 20 from falling toward the shoulder opening.

At this time, the 1 st and 2 nd claw portions 24c and 24d of the stopper claw 24 are raised to a position above the upper surface position of the upper wing 40, but are held in the groove portion 32 of the cover member 30 without protruding to a position outside (above) the cover member 30 by restricting the rotation of the pull tab 20. This prevents the 1 st and 2 nd claw portions 24c and 24d of the tab 20 from easily catching other objects.

In the slide fastener 1 shown in fig. 1 having the slider 6 of example 1 as described above, when opening and closing the slide fastener 1, the pull tab 20 is pinched and rotated so that the inclination angle with respect to the upper surface of the upper wing plate 40 on the rear opening side is 50 ° or more, for example. This enables the 1 st and 2 nd pawl portions 24c, 24d of the tab 20 to be retracted from the element guide passage 16 of the slider body 10.

Further, by sliding the slider 6 in the coupling direction (forward) or the separating direction (backward) of the element rows 4 while keeping the tab 20 at an inclination angle of 50 ° or more, the slider 6 can be smoothly slid to open or close the slide fastener 1 without the 1 st and 2 nd pawl portions 24c and 24d of the stop pawl 24 interfering with the element rows 4.

When the slider 6 is slid to a desired position of the element row 4 and the operation of the slider 6 is completed, the tab 20 held by the user is released, and the tab 20 is rotated by its own weight toward the rear opening of the slider 6. Thus, the tab 20 can project the 1 st and 2 nd pawl portions 24c, 24d into the element guide passage 16 through the pawl hole portion 48 formed in the upper wing plate 40.

At this time, since the 1 st claw portion 24c abuts on 1 fastener element 5 in the element row 4 from above, the tab 20 is held in a rotation stopped state inclined at a predetermined angle with respect to the rear opening side upper surface of the upper blade 40. In this case, the fastener element 5 with which the 1 st pawl portion 24c abuts is referred to as the 1 st element.

When the pull tab 20 is held in the above-described rotation stop state, for example, when the left and right fastener stringers 2 receive a lateral pulling force, the slider 6 is forcibly moved in the separating direction via the element rows 4 of the left and right fastener stringers 2. In this case, the 1 st claw portion 24c abuts on the 1 st element, and the tab 20 is turned again by the movement and the self weight of the slider 6, whereby the 1 st claw portion 24c is fitted between the 1 st element and the 2 nd element adjacent thereto, and the 2 nd claw portion 24d of the stop claw 24 is fitted between the mutually adjacent fastener elements 5 of the other element row 4.

Thereafter, the slider 6 is further forcibly moved in a state where the 1 st and 2 nd pawl portions 24c and 24d of the stop pawl 24 are fitted into the left and right element rows 4, whereby the pawl body base portion 24a of the stop pawl 24 abuts against the front wall surface of the pawl hole portion 48 of the upper blade 40, and the central coupling portion 22 of the tab 20 abuts against and is supported by the support bulging portion 46 of the slider body 10. Thus, the turning of the tab 20 is stopped in a state where the 1 st and 2 nd pawl portions 24c, 24d are fitted into the element row 4, and therefore, the forced movement of the slider 6 can be stopped, and the slider 6 can be locked with respect to the element row 4.

In this manner, in the slider 6 of example 1, the 1 st and 2 nd pawl portions 24c and 24d of the stop pawl 24 are fitted into the element row 4 by the self-weight turning of the tab 20 and the forced movement of the slider 6 in the element separating direction, whereby the stop mechanism can be made to function.

In the slider 6 of example 1 as described above, the tab portion 21 and the attachment shaft portion 23 of the tab 20 are coupled by the 1 central coupling portions 22 having a large cross-sectional area and disposed at the widthwise central portion of the tab 20. Therefore, the strength of 1 central coupling part 22 can be increased compared to the conventional 2 central coupling parts (arm parts) generally arranged on the left and right sides in the central coupling part 22 of example 1.

Further, even if the pull-tab 20 receives a force in a direction of twisting with respect to the attachment shaft portion 23 when the pull-tab 20 is gripped and the slider 6 is slid along the element row 4, the pull-tab 20 of example 1 has a high strength of the central coupling portion 22 as described above, and the central coupling portion 22 is disposed at the central portion in the slider width direction, so that the moment received by the central coupling portion 22 can be reduced as compared with conventional pull-tabs such as patent documents 1 and 2. This makes it difficult for the central connecting portion 22 of the tab 20 to be deformed or broken, and the slider 6 can be stably slid along the element row 4.

In the slider 6 of example 1, the 1 central coupling portion 22 of the tab 20 is formed wide in the width direction, and the upper surface of the central coupling portion 22 and the upper surface of the tab 21 are formed as flat continuous surfaces. Further, when the pull tab 20 is laid down toward the rear opening side, the central connecting portion 22 of the pull tab 20 is fitted into and housed in the groove portion 32 of the cover member 30, and the step formed between the upper surface of the cover member 30 and the upper surface of the pull tab 20 can be reduced (or the step formed between the upper surface of the cover member 30 and the upper surface of the pull tab 20 can be prevented). This makes the slider 6 have a good touch feeling, and makes it difficult for the slider 6 to catch other articles when the slide fastener 1 is attached to a fastener-attached product such as clothing.

Further, the slider 6 can be seen as flat as a whole when the slider 6 is viewed from the upper surface side. Further, the left and right outer edges of the base end portion of the grip portion 21 of the pull tab 20 are formed to have a width corresponding to the rear end portion of the cover portion 31 of the cover member 30 as described above, and the cover member 30 and the pull tab 20 are formed to have an integral outer shape. Therefore, the entire slider 6 has a high-quality appearance or a fashionable appearance, and the quality of the appearance of the slider 6 can be improved.

Further, in the slider 6 of embodiment 1 described above, the stopper mechanism is formed by providing the pawl hole portion 48 in the slider body 10 and providing the stop pawl 24 in the pull tab 20. However, in the present invention, although the strength of the force in the twisting direction of the pull-tab 20 and the touch and the appearance of the slider 6 are improved, a slider without a stop mechanism may be formed when the slide fastener 1 is used without locking the slider 6 to the element row 4.

For example, fig. 10 and 11 show a slider 7 without a stop mechanism as a modification of embodiment 1. In the slider 7 of this modification, the pawl hole portion 48 is not provided in the upper blade 40a and the stop pawl 24 is not provided in the tab 20a, as compared with the slider 6 of embodiment 1 described above. Further, the slider 7 of the modified example has the same shape and configuration as the slider 6 of embodiment 1, except that the pawl hole portion 48 and the stop pawl 24 are excluded. Therefore, in the description of this modification and fig. 10 and 11, the same reference numerals are given to the substantially same parts and portions as those of the slider 6 of embodiment 1, and thus the detailed description thereof will be omitted.

In the slider 7 of such a modification, as in the slider 6 of embodiment 1 described above, the effect that deformation or breakage hardly occurs in the central connecting portion 22 of the pull-tab 20a, and the effect that the touch and appearance of the slider 7 are good and other articles or the like are not easily caught by the slider 7 can be obtained.

In the slider 6 of embodiment 1 described above, 1 front engaged part (1 st engaged part) 41 is provided at the front end of the upper blade 40 of the slider body 10, and right and left rear engaged parts (2 nd engaged part) 42 are provided at the rear end of the upper blade 40. Further, the cover member 30 is provided with 1 front engaging portion (1 st engaging portion) 33 at the front end portion of the cover portion 31, and left and right rear engaging portions (2 nd engaging portions) 34 at the rear end portion of the cover portion 31. By providing the front and rear engaged portions 41 and 42 and the front and rear engaging portions 33 and 34, the cover member 30 is engaged with the slider body 10 in a snap-fit manner.

However, in the present invention, as shown in fig. 12, for example, instead of 1 front engaging portion, a pair of left and right front engaging portions (1 st engaging portion) 53 disposed at bilaterally symmetrical positions may be provided at the front end portion of the cover portion 51 having the 1 st and 2 nd cover portions 51a, 51b of the cover member 50, and a pair of left and right front engaged portions (1 st engaged portion) corresponding to these front engaging portions 53 may be provided at the front end portion of the upper wing plate of the slider body, not shown.

In this case, the front engaged portion of the upper blade is disposed forward in the slider longitudinal direction relative to the bearing portion. Further, left and right rear engagement portions (2 nd engagement portions) 54 of the cover member 50 and left and right rear engaged portions (2 nd engaged portions) of the slider body (not shown) are formed in the same manner as the slider 6 of embodiment 1 described above. The cover member 50 is formed without the left and right fitting wall portions 35 of embodiment 1.

By using the front and rear engaging portions 53 and 54 of the cover member 50 and the front and rear engaged portions of the slider body, the cover member 50 can be easily engaged with the slider body in a snap-fit manner.

In embodiment 1 described above, the case where the slider 6 is used in the normal type slide fastener 1 in which the coil-shaped fastener element 5 is attached to the tape side edge portion of the fastener tape 3 is explained.

However, the slider of the present invention can also be applied to a so-called concealed type slide fastener in which a tape side edge portion of a fastener tape is bent in a U shape, and fastener elements are attached to a folded-back portion bent in the U shape, although not shown.

In this case, the concealed type slide fastener is a concealed type slide fastener in which the fastener elements are visible on the front surface side of the fastener attached product and is attached to the fastener attached product by being used on the back surface side. A slider used in the concealed type slide fastener used on the back surface (hereinafter referred to as a concealed type slider) includes a slider body, a pull-tab, and a cover member.

The slider body of such a concealed type slider includes an upper blade, a guide post suspended from a shoulder opening side end of the upper blade, a lower blade extending outward from an outer periphery of a lower end portion of the guide post, left and right side wall portions suspended from left and right side edge portions of the upper blade, and left and right lower plate portions extending inward from lower end portions of the left and right side wall portions toward the lower blade. In this case, the lower wing plate is formed smaller than the upper wing plate. An insertion space portion for inserting the fastener tape is formed between the lower blade and the left and right lower plate portions.

In such a concealed type slider, the upper blade, the pull tab, and the cover member of the slider body have substantially the same structures as the upper blade 40, the pull tab 20, and the cover member 30 of the slider 6 of embodiment 1, and therefore, the same effects as those of the slider 6 of embodiment 1 can be obtained.

Description of the reference numerals

1 zipper

2 zipper teeth chain

3 zipper tape

4 element row

5 zipper teeth

6. 7 puller

10 slider body

12 lower wing plate

13 guide post

14 flange part

15 raised part

16 element guide path

20. 20a pull tab

21 pinching part

22 central connecting part

23 mounting shaft part

24 stop pawl

24a claw body base

24b extension piece

24c 1 st claw part

24d 2 nd jaw part

30 cover part

31 cover part

31a 1 st cover part

31b 2 nd cover part

32 groove part

33 front engaging part (1 st engaging part)

33a front pillar part

33b front claw part

34 rear engaging part (No. 2 engaging part)

34a rear pillar portion

34b rear claw part

35 embedded in the wall

36-shaft pressing part

37 connecting the lateral wall parts

40. 40a upper wing plate

41 front engaged part (1 st engaged part)

41a front pillar part

41b front hook part

42 rear engaged part (No. 2 engaged part)

42a rear pillar portion

42b rear hook

43 front reinforcing wall part (1 st reinforcing wall part)

44 rear reinforcing wall part (No. 2 reinforcing wall part)

45 connecting the vertical wall parts

45a front wall part

45b rear wall

45c intermediate wall portion

45d bearing part

46 support bulge

46a base part

46b support projection

47 reinforcing rib

48 claw hole part

49 groove part

50 cover component

51 cover part

51a 1 st cover part

51b 2 nd cover part

53 front engaging part (No. 1 engaging part)

54 rear engaging part (No. 2 engaging part)

Claims (9)

1. A slider for slide fastener (6, 7) comprising a slider body (10) in which an upper blade (40, 40a) and a lower blade (12) are coupled to each other by a guide post (13), a pull tab (20, 20a) rotatably disposed with respect to the slider body (10), and a cover member (30, 50) attached to the slider body (10), characterized in that:

the pull tab (20, 20a) has a pinch portion (21), 1 connecting portion (22) extending from the pinch portion (21) in the pull tab longitudinal direction, and a pair of attachment shaft portions (23), the pair of attachment shaft portions (23) protruding from the end portion of the connecting portion (22) opposite to the pinch portion (21) to the left and right sides in the pull tab width direction,

the cover member (30, 50) has a 1 st cover portion (31a, 51a) and a pair of 2 nd cover portions (31b, 51b), the 1 st cover portion (31a, 51a) covers the shoulder opening side end portion of the upper wing plate (40, 40a) when viewed from the upper surface direction of the slider body (10), the pair of 2 nd cover portions (31b, 51b) extends from the 1 st cover portion (31a, 51a) in the rear opening direction,

a groove portion (32) capable of accommodating the connecting portion (22) of the pull tab (20, 20a) is provided between the pair of the 2 nd cover portions (31b, 51b) of the cover members (30, 50), the groove portion (32) being open in the rear opening direction,

the cover members (30, 50) have engaging portions that engage with the upper wings (40, 40a), and at least a portion of the cover members (30, 50) is formed so as to be elastically deformable,

the upper wing plates (40, 40a) have engaged portions for engaging the engaging portions of the cover members (30, 50),

the engaging portions include at least 1 st engaging portion (33, 53) disposed on the 1 st cover portion (31a, 51a) and a pair of 2 nd engaging portions (34, 54) disposed on the 2 nd cover portions (31b, 51b) on the left and right, respectively.

2. A slider for a slide fastener according to claim 1, wherein:

the engaged portion has at least 1 st engaged portion (41) and a pair of 2 nd engaged portions (42), and in a state where the slider body (10) is assembled with the cover members (30, 50) and the pull tabs (20, 20a), the 1 st engaged portion (41) is disposed at a position closer to a shoulder opening side of the slider body (10) than the mounting shaft portion (23) and engages the 1 st engaging portions (33, 53) of the cover members (30, 50), and the pair of 2 nd engaged portions (42) is disposed at a position closer to a rear opening side of the slider body (10) than the mounting shaft portion (23) and engages the 2 nd engaging portions (34, 54) of the cover members (30, 50), respectively.

3. A slider for a slide fastener according to claim 2, wherein:

the upper wing plate (40, 40a) has: a 1 st reinforcing wall portion (43), the 1 st reinforcing wall portion (43) being provided upright on each of the right and left sides of the 1 st engaged portion (41) in the upper wing plates (40, 40a), and being formed integrally with the 1 st engaged portion (41); and a 2 nd reinforcing wall portion (44) that is provided upright on the outer side of each of the pair of 2 nd engaged portions (42) of the upper flanges (40, 40a), and that is formed integrally with the 2 nd engaged portion (42).

4. A slider for a slide fastener according to claim 3, wherein:

the 1 st reinforcing wall portion (43) and the 2 nd reinforcing wall portion (44) of the upper wing plate (40, 40a) are disposed separately from each other,

the cover member (30, 50) has an insertion wall portion (35) that is inserted between the 1 st reinforcing wall portion (43) and the 2 nd reinforcing wall portion (44) of the upper blade (40, 40 a).

5. A slider for a slide fastener according to claim 4, wherein:

left and right reinforcing ribs (47) rising from the upper wing plates (40, 40a) are arranged at left and right side edge portions of the upper wing plates (40, 40a),

the embedded wall portion (35) is disposed between the reinforcing rib (47) and the mounting shaft portion (23).

6. A slider for a slide fastener according to any one of claims 1 to 5, wherein:

the width of the connecting part (22) is set to be larger than the maximum width of 1 of the 2 nd cover parts (31b, 51 b).

7. A slider for a slide fastener according to claim 1, wherein:

the pinch portion (21) of the pull tab (20, 20a) has a base end portion which is connected to the connecting portion (22) and is formed to have a width wider than that of the connecting portion (22),

the proximal end portion of the gripping portion (21) is adjacent to the rear opening-side end portion of the cover member (30, 50) when the coupling portion (22) is housed in the groove portion (32) of the cover member (30, 50).

8. A slider for a slide fastener according to claim 7, wherein:

the width dimension between the left and right outer edges of the proximal end portion is set smaller than the width dimension between the left and right outer edges of the rear opening side end portion of the cover members (30, 50).

9. A slider for a slide fastener according to claim 1, wherein:

the slider body (10) has a pawl hole portion (48) provided through the upper wing plate (40),

the pull tab (20) has a stop pawl (24), and the stop pawl (24) is provided to protrude from the coupling portion (22) and protrudes into the element guide path (16) of the slider body (10) through the pawl hole portion (48).

Images